News

The IoT connection, which utilizes the energy and infrastructure of the mobile phone network, enables the development of new services

Aalto University has developed the first prototype of an Ambient Internet of Things (AIoT) system operating in a mobile phone network, which enables a very energy- and cost-effective data transfer method for Internet of Things applications.
Aalto-yliopistossa tehdään monialaista 5G-tutkimusta verkkotekniikasta ja signaalinkäsittelystä aina 5G:tä hyödyntäviin sovelluksiin. Kuva: Aalto-yliopisto / Mikko Raskinen
Aalto University conducts multidisciplinary 5G research, ranging from network technology and signal processing all the way to applications utilising 5G. Photo: Aalto University / Mikko Raskinen

The 3rd Generation Partnership Project, the standardization organization for mobile networks, recently launched a study on the use of new types of so-called Ambient IoT devices that utilize ambient energy in mobile phone networks. Devices collect energy from their environment to power themselves using, for example, solar, vibration, thermal or radio frequency energy.

"The prototype of the AIoT device we developed consists of a fourth generation (4G) LTE (Long Term Evolution) base station, an AIoT device that controls the reflection coefficient of the antenna, and a mobile phone whose channel estimator works as a receiver of AIoT messages. We have presented a prototype as a demo at the ACM Mobisys conference in June in Helsinki, using a signal generator as the source of the LTE signal and a software radio-based mobile phone implementation as the receiver. In the final implementation, the signal sent by the actual base station is used and the receiver is implemented as an update of the existing mobile phone hardware program. We have already tested the system in the laboratory with a real signal sent by the base station," says Riku Jäntti, professor at Aalto University.

"Although the prototype is integrated with a 4G base station, the same concept can be adapted to any surrounding mobile communication system such as 5G networks and beyond," Jäntti continues.

The researchers believe that this first prototype of an AIoT system is a significant milestone in the development of mobile IoT networks and shows the promising future of ultra-low-energy mobile IoT technologies. The concept enables the development of new services based on detecting the proximity of AIoT devices around smartphones.

The work has been in part performed in the framework of the European Project Hexa-X II on the 6th Generation (6G), and also, in part, thanks to the support of Orange, the leading telecommunications operator and digital service provider.
The next planned step for the researchers is to test the concept with another AIoT prototype: the compact and lightweight energy harvester "Crowd-Detectable Zero-Energy Device", which Orange created and presented for the first time in 2021 at the Mobile World conference. This technology offers potential applications for asset tracking, proximity-based smartphone positioning in indoor environments, and low-cost battery-free AIoT.

Read the article Aaltodoc publication archive.

Riku Jäntti

Professor
Department of Information and Communications Engineering
  • Published:
  • Updated:

Read more news

Artistic illustration: Algorithms over a computer chip
Research & Art Published:

Aalto computer scientists in STOC 2024

Two papers from the field of computer science were accepted to STOC 2024.
Harald Herlin Learning Center
Research & Art Published:

Learning Centre to pilot new opening hours as of 19 August 2024

The change gives Aalto students and staff more extensive access rights to the Learning Centre spaces and collections.
A group of people walking along the linden alley in summer
Research & Art, University Published:

Strong overall result: 27.5 million euros from the Research Council of Finland

A total of 52 Aalto researchers received Academy Research Fellowship and Academy Project funding. The total funding awarded to Aalto University amounts to 27.5 million euros
Appointments Published:

Introducing four new professors at the School of Engineering

Professors of Practice Hannele Holttinen and Teemu Manderbacka and Assistant Professors Mikko Suominen and Risto Ojala were appointed to the career path of professors during January-June 2024.